Chapter 10 provides an introduction to the software

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Unformatted text preview: tput devices. Chapter 10 provides an introduction to the software of computers. It explains why both hardware and software are necessary for a computer to do useful job, what are the various types of software, and how to acquire or develop software. Chapters 11, 12, and 13 describe the various types of commonly used tools and techniques for planning, development, implementation, and operation of software systems. Chapter 11 deals with the commonly used tools for planning computer programs before starting to write them. These tools help in producing correct and effective computer programs. Chapter 12 deals with the commonly used programming languages for writing computer programs. It differentiates between high-level and low-level programming languages and briefly describes a number of popular high-level languages. It also explains how to select a programming language out of the many options available for coding an application. Chapter13 deals with the main activities of the implementation and operation phase, which include testing and debugging of programs, complete documentation of the system, changeover from an existing system to the new system, and system modification and maintenance. Chapter 14 presents the important concepts of operating systems, which is a system software present in all computer systems. It also briefly describes a number of popular operating systems. Chapter 15 describes some of the most commonly used application software packages. They are word-processing package, spreadsheet package, graphics package, and personal assistance package. Chapter 16 deals with business data processing. It describes the basic concepts of database systems, and the modern concepts in database technology. Chapter 17 presents the important concepts of data communications, computer networks, and distributed computing systems. Chapter 18 presents a description of the Internet. It explain what it is, how it has evolved, what are the basic services offered by it, what are the various types of tools available to make effective use of the Internet, what are the common uses of the Internet and how to get connected to t...
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